Foot-operated accelerator for motor vehicles



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Oct. 23, l923.

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Be it known that'l, JAMES remise on. as, ieee.

Integrativa/f]erstes.

.reruns a. THOMSON, or nir.'nnen., vrcronra', AUSTRALIA.

rOoT-ornnnrnn y nccsnnneron non `nomen vii-metes. y

Apinicaon flied may s,

T all 'whom it may concern: Y p

A Lnxiiinnn` THOMSON, a subject of the Kingot Great engine is required during y,which time it is necessary orthe drlvertodevote his attenV Britain andlreland, and a resident 'ofthe post town of Mildura, in the parish OtMildura, county of Karlrarooc, State of Vic` toria, Commonwealth of Australial (whose post oiiice address is 11th Street, in the said post town of Mildura), have invented a cer-A tain new and useful mproved Foot-Oper-y ated Accelerator for f Motor Vehicles, of which the following is a` specification.

' This invention relates to a foot Operated accelerator for motor vehicles of the class in which the throttle of the engine is at pres ent manipulated by a hand control mechanism only. y

The `Object ot thek invention is to provide a simple, inexpensive and highly eiiicient de-y vice7 which may be easily fitted `to existing as well'as to new vehicles, whereby an independent'hand and toot adjustmenty of the throttle is providedso that the usual hand control lever on' the'steering Wheel may be setto open the throttleto any'V desired dei gree vand `furtheradjustment of the throttle Vmay then be readily effected by meansofa foot pedal, the hands kbeing thus left free to operate the steering wheel. 7 Y rifl'ieinvention is 'odistinct advantageat times when immediate accelerationA o1z the r tion to the steering of the vehicle and pro` further moved by Aoperation of the foot pedal without raltering the position of the han-d... Acontrol' lever Onthe steering wheel. On revides an inexpensive reneinent for vehicles in which no foot accelerator islat present provided. n

' TheV invention consists briefly in the provision of a foot pedal located conveniently to the driver and connected toI the throttle arm or lever of the carburetor and to a spring which is also connected to theexist- Ving hand control rod in such a manner that" the throttle may be set at anydesiredposition'by the hand control andrmay be then laxing the pressure on the footpedal the spring causes the pedal and the throttle arm to return to their original position at which the throttle is setby thehand controh Referring to the drawings which form part of thisspecificationr- Figure l is a side elevation of the inven` tion the carburetor and hand control rod 1922. 'serial No. 559,386.

being `shown indotted lines. The v:toot rac" -celerator is in' its normal positionwiththe springcontracted;` Figure 2is a plan of Figure 1.]

is attached. TheV parts are shown in normal .position by full lines and in depressed posi-l tion by dotted lines.-

ligureli-v is a detailplan of the joint be- Figurefis anr enlarged detail view of. the Y Yfoot pedaland ybell Ycrankflever to whichy it tween the bell crank lever and the connect` Y Figure 6 is a `similar view showing the,`

relative positions" when the` pedal is depressedto open the throttlefandthe'spring is consequently extended. n n i y More specifically the inventionvcomprises end of a 'push rod 3 Lpassing through'ahole in the footboard 4 of .the` vehicle. Theforattac-hed preferably by aball Vand'fsoclfet joint l1 toy the reary end ,of a connecting rod 12Ywhi`chimay be threaded at its rear end as at 13 to provide an adjustable connection atsaid joint. The intermediate portion of the said connecting rodfis attached at 14 'to the vthrottle arm or VVlever` 16 ,of the carburetor 17. Y y u -V Secured at 18 `to said connecting rodk near its forward end is they rear end of a coiled a foot pedal 2 which is mount-ed on the rear i l 3 i 8O war-d end of this push rod lis pivotedy at 6;. to 'one arm 7 of a bell crank levervwhich is intermediately pivoted at'S to the footboard Aor other'convenient part of .the` vehicle.V

The other rarm 9 yof the bell crank lever is f 95 i spring19 into vwhich the ',forwardportion of the connecting rod passesv andis adapted lto move freely.

' Thel forward endof spring is; suitably secured at 21 to the aforesaid handV control rod 22 so that when they vlatter 'is moved in Y the usual manner to open the throttle the compressed springj19 transmitsjthe move` mentofthe rod 22 to the Vconnecting rod :12

`which lmoreover. abutsat its forward. end y against the rod 22' or fastening 21 as in,

j igure 5.7 rThe movement of the rod-22` is fthus transmitted to the throttle armvl and y the throttlefis thus setkinV any desired posi-y tion 'by `manipulating `thefusual hand con` trol lever on thefsteering wheel.

no y

j The 'engine is `shown indotted lines at y Ythrottle arm 16.

immediately the pressure on the pedal` is removed or relaxed the contraction oit the spring 19 causes the throttle to close to the desired extent which 'is limited only by the position at which the throttle 'is set bythe hand-.control lever as aforesaid.

It will thus be seen that by the special arrangement ot the spring; which is interposed betwcen'the hand control rod and the connecting rod of the foot pedal.Il an independent adjustment ot Athe throttle by the hand .and foot operated devices s 4pro-` vided.

The invention which isjnot liable to get out of order, may be easily yfitted to the 'vehicle at but slight expense and with `practically no alteration to existing0a parts such as thevhand control devices.

Having now-.described my invention what claim `as new and 'desire' .toy secure by Letters .Patent is j 1. An acceleratorfor motor vehicles comprising a toot pedal; a pivotcd bell crank lever secured at one end to said toot pedal;

4a connectingv rod secured at one end to the bell crank .lever and secured intermediate of its ends to a throttle arm;l and a spring for operatively securing said connecting' rod to an arm of said Vhand control, whereby operation ot the hand control causes movement of said connecting rod to open they throttle to a predetermined extent. Y

2. An accelerator for motor vehicles comprising a foot pedal; a pivoted bell crank lever connected at one end to said foot pedal; al connecting rod connected at one end to the bell crank lever and 'serured in-` termediate of its ends to a throttle arm; and a spring connected at oneend to ysaid connecting rod and the other end to an arm of the hand Vcontrol rod;

3. An 'improved toot operated accelerator for motor vehicles consisting in the combination with a throttle'arm, and a hand control rod for operatingA same, of a ootpedal7 a connecting rod attachedto the throttle arm and pivotally connected with the Jfoot pedal7 ak coiled ,spring adapted to normally draw i forth.

. connecting rod and the other end to an said/connecting rod into operative engagement with the hand control rod so that an unyielding connection is formed between said` rods when the hand control rod is moved to open the throttle said rods being siparated by the extension of said spring on depression of the' foot pedal whereby the connecting rod Vand throttle arm are moved to further open the throttle without moving the hand control rod. l

4f. An improved foot operated accelerator for motor vehicles consisting in the combination with a throttle arm and a hand control rod, tor operating same oit a foot pedal. a connecting rod attached to said throttle arm, a universal oint for coupling-said connecting rod to the toot pedal and anormally compressed spring interposed between said connecting rod and the hand control rod for the purpose set forth. f

v5. Animproved toot operated acceleratorl for motor vehicles consistingin the combination with a throttle arm and a hand control rod for operating' same of toot pedal. a bell crank lever connected to said pedal, a connecting` rod intermediately attached to the throttle arm and pivotally connected at its rear end to the bell crank leverand a normally compressed .spring surrounding the forward portion of said connecting rod.

said spring being fastened at its rear end to said 'connecting rod and at its forward end to the hand control rod for the purpose set forth. y n

6; in improved toot operated accelerator :tormotor vehicles consisting in the combination with a throttle `arm and a hand coni trol rod for operating same,of a foot pedal, a push rod carry-ing said pedal, a ybell crank lever attached tosaidpiish rod, a connecting rod intermediately attached to the throttle yarm a universal joint between said connecting rod and bell crank lever and a coiled spring intcrposedbetwcen the forward portion of the connecting rod and the hand control rod and adapted toV normally draw said rods together for the purpose Set 7, An accelerator for motor vehicles comprising a toot pedal; a connecting rod con-y nected .intermediate of its endsto a. throttle arm; means `for connectingone'end of said rod to said footpedal; andv a spring connected at one end to the free end/of said arm of a hand control rod, said spring lbeing adapted to rpull said connecting rod to said hand control rod. Y, n

In testimony whereof l altix my signature.

J. A. rHoMsoN.

Witness: y j

H. L. RUfrrrnRronD. 

